GPT-6.1 Sol Pro vs Step 5 Preview
Price, context window & benchmark comparison
VS
Compare different models
Verdict: Step 5 Preview is 2.8× cheaper than GPT-6.1 Sol Pro on a typical 3:1 input/output mix. GPT-6.1 Sol Pro has the larger context window (1.1M vs 1M).
| GPT-6.1 Sol Pro | Step 5 Preview | |
|---|---|---|
| Input price / 1M | $2.00 | $1.00 |
| Output price / 1M | $10.00 | $2.70 |
| Blended price (3:1) | $4.00 | $1.43 |
| Cached input / 1M | $0.10 | $0.10 |
| Context window | 1.1M | 1M |
| Max output | 128K | 64K |
| Intelligence index | — | 28.5 |
| Coding index | — | — |
| Providers | 7 | — |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-09-29 | 2026-10-08 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, GPT-6.1 Sol Pro or Step 5 Preview?
Step 5 Preview is 2.8× cheaper than GPT-6.1 Sol Pro on a typical 3:1 input/output mix.
GPT-6.1 Sol Pro vs Step 5 Preview: which has a bigger context window?
GPT-6.1 Sol Pro: 1,050,000 tokens. Step 5 Preview: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GPT-6.1 Sol Pro ≈ $9,000, Step 5 Preview ≈ $3,350.
More comparisons
GPT-6.1 Sol Pro vs GPT-6.1 TerraGPT-6.1 Sol Pro vs GPT-6.1 Terra ProGPT-6.1 Sol Pro vs Kimi K3.1 ProGPT-6.1 Sol Pro vs MiniMax M3.1 FlashGPT-6.1 Sol Pro vs DeepSeek V4.1 Flash 1017GPT-6.1 Sol Pro vs Nemotron 3.5 Super VLGPT-6.1 Sol Pro vs Gemini 4 ArgonGPT-6.1 Sol Pro vs Claude Haiku 5.5GPT-6.1 Sol Pro vs Nano Banana 2.1GPT-6.1 Sol Pro vs Mistral Large 4GPT-6.1 Sol Pro vs GPT-6.1 SolGPT-6.1 Sol Pro vs Claude Sonnet 5.5GPT-6.1 Sol Pro vs GLM 5.3 PrimeGPT-6.1 Sol Pro vs Qwen3.8 Max PrimeGPT-6.1 Sol Pro vs Command A+GPT-6.1 Sol Pro vs GPT-6 Luna ProStep 5 Preview vs GPT-6.1 TerraStep 5 Preview vs GPT-6.1 Terra ProStep 5 Preview vs Kimi K3.1 ProStep 5 Preview vs MiniMax M3.1 FlashStep 5 Preview vs DeepSeek V4.1 Flash 1017Step 5 Preview vs Nemotron 3.5 Super VLStep 5 Preview vs Gemini 4 ArgonStep 5 Preview vs Claude Haiku 5.5